Burner construction.



H. A. DREFFEIN & M. S. FLINN. BURNER CONSTRUCTION. APPLICATION FILED MAY3. 913.

1,166,451. I Patented Jan. 4-, 1916.

. '"m O 57 6 O 54 g 63 62 59 66 58 a/z'inessm I fizz/anion vMeli/z'llefif'lifin A? J/Zifw HENRY A. DREFFEIN AND MELVILLE S. FLINN,OF CHICAGO, ILLINOIS.

BURNER CONSTRUCTION.

Specification of Letters Patent.

Application filed May 3, 1913. Serial No. 765,333.

T 0 all whom it may concern:

Be it known that I, HENRY A. DREFFEIN, and MELVILLE S. FLINN, citizensof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inBurner Construction, of which the following is a specification.

This invention relates to improvements in burner construction,especially adapted for use with gas producing and consuming systems.proved form of burner construction, espe cially adapted for use with gasproducing systems in which bituminous coal, or similar fuel is used forthe generation of gas, which latter is highly charged or impregnatedwith free carbon and gummy material. In burning this gas it ispractically impossible to deliver the same with the aid of fan blowersor the like, since unless the gas is thoroughly. scrubbed and cleanedthe blowers or pumps will become clogged or gummed so as to interferewith their eflicient operation. Our improved burner constructioncontemplates the use of a gas supply duct'in communication with thesource of supply and also an induction tube, as we term it, extendinginto said supply tube and in communication with a supply of an inducingmedium such as air or the like. In' the embodiment shown and describedherein, this induction tube is connected with an air supply and isintended to supply air not only. for induction of the gas supply anddelivery of the same to the burner, but also utilizes this inducingmedium for mixture with the gas toenhance and promote the combustionthereof.

Still another object of our invention is to associate with the inductiontube, means whereby the flow of air or the like therethrough as toquantity and volume may remain constant while the induction efi'ect'thereof may be varied.

Another object is to provide in association with our device,-an improvedform of valve for shutting off the gas supply.

We attain these and other objects by means of the construction describedand shown in the following specification and accompanying drawings, inwhich F igui'e 1- is a side view, partially in section, of our improvedburner and valve We have produced a new and imstructure. dinal section,taken along the line 3-3 of 1g. 1; and Fig. 3is a detail se'ctionof aportion of our improved burner.

Like numerals refer throughout the drawings. v

Extending upwardly fromthe. gas supply conduit is the pipe elbow 41,having the hori-- meter of the bore 43 being at a point 43 ad- PatentedJan. 4, 1916.

Fig. 2 is a horizontallongitu to like elements jacent one. end of theburner, the latter being enlarged from the point 43 to the adjacent end,as shown in Fig. 1.

The vertical portion 41 of the elbow 41 is provided at its lowerextremity with the valve seat 41, with which coacts the frustoconicalvalve 45, provided with the upwardly extending spaced flanges or lugs46,.between which is pivotally secured the enlarged extremity of thevalve stem 47. This valve stem extends upwardly through the elbow 41,the latter being provided with the outstanding collar 41 The stem 47 isthreaded at its upper portion and carries the operating hand-wheel 48secured to its upper 'extremity. A second wheel 49 is thre'adablymounted upon the stem 47, being provided with the central enlarged hub49 adapted to seat upon the upper extremity of the collar 41. Thepurpose of this construction is as follows :The wheel 49 being normallyseated on the collar 41, the hand wheel 45. may be rotated to move thestem 47 and valve upor down, as desired. Occasionally we have founddeposits of gummy carbon and similar material formed on the surface ofthe valve and valve seat, so as to cause the latter to stick. In theordinary form of valve it becomes necessary to use a bar or long wrenchto rotate the hand wheel, thereby unduly straining the threads and otherportions of the valve structure. device, however, it is merelynecessaryto rotate the wheel 49 upwardly a slight dis- In our tance from thecollar 41, whereby a direct blow may be applied to the upper end of thevalve stem, and the valve and stem may thus be forced downwardlydirectly until the hub 49 again seats upon the collar 41.

Located in proximity to the elbow 41, and, slightly above the latter, isprovided the air supply pipe 51, adjacent the elbow, with the connectingpipe 52 secured to one portion of the T 53, which has, projectingtherefrom, the pipe 54. A. valve 51 is provided in the pipe 51. A pipe54 projects through the elbow, as shown in Fig. 1, a projectingapertured boss 55 being provided, with which coacts the gland follower56, packing 57 being located around the pipe 54 to prevent leakage fromthe elbow. lhis pipe 54 may be formed integral with or threaded throughthe gland follower as desired. The portion 41' of the elbow 41 isinclined slightly, as shown in Fig. 2, to permit the projection of thepipe 54 therethrough without interference with the valve stem 47.

Carried by and secured tothe pipe 54 in the portion 41* of the elbow- 41is the induction tube as we term it 58, in which is slidably mounted thenozzle 59, having the centrally located aperture 60 therethrough. Arms61 extend rearwardly from nozzle 59 and terminate in a ring 62, in whichis rotatably mounted a rod 63, having a groove 64 therein. A pin 65 iscarried by the ring 62 and seats in a portion of the groove 64, so thatthe rod 63 may be rotated with respect to the nozzle and ring, butrelative reciprocation thereof will be prevented. 'lhe rod 63"extendsrearwardly from the nozzle through the tube 58 and pipe 54, and projectsthrough a gland or stuihng box 66 carried by the T 58. This rod isprovided with the operating handle 67 and is in threaded engagement withthe gland follower 66, so that rotation of the handle 67- will operateto advance or retract the nozzle 59 with respect to the open extremityof the tube 58, which terminates short of the adjacent end of the burner43, as shown in Fig. 2. lhe operation of this construction is asfollows: Valve 51 being opened to permit the flow of air therethrough,air will flow through pipe 54, tube 58, and nozzle 59; from thence itwill flow through the burner 43 into the furnace 40. 'lhisflow of airthrough elbow portion 41 and burner 43 will induce the flow of gas fromthe producer, this inducing air not only serving to deliver gas to thefurnace, but also causing the proper mixture of. air and gas prior tocombustion thereof in the burner. Furthermore, this induced flow causesa suction in the entire delivery line, and the same is transmitted tothe producer to balance the pressure caused by the supply of steam andair, so that approximately atmospheric pressure will be obtained in theproducer,

meager thereby eliminating the danger of flare up of gas Or flame whenpoking or changing the producer. lit will be apparent that the suction,as well as the flow of gas, will be regulated by the action of the airsupply line at the burner, so that, assuming the nozzle to bestationary, increased flow and increased suction will result fromincreasing the flow of air. it will be obvious, however, that at times,owing to varying conditions of the gas or atmosphere, a variedproportion of air and gas will be found desirable. Were the nozzle 59fixed, it would be impossible to vary this proportion without varyingthe flow of gas and the suction, since an increase in the amount andvelocity of air would result in an increased flow and an increasedsuction. 'llo obviate this difliculty, we have provided .the slidingnozzle construction described above, so that, in obedience to well knownphysical laws, when it is desired to increase the ratio of the air tothe gas, the nozzle 59 may be retracted from its normal position,thereby resulting in a decrease in the velocity of efflux of air fromthe tube 58 thereby lessening the induction efl ect of the air andresulting in a reduced flow of gas for the same air supply, and aconsequent varied minture. Similarly the nozzle may be adjusted so thatthe same air supply or gas may be induced, assuming that the nozzle isin position to permit such adjustment.

Another advantage of this construction is that we may regulate the flowof gas wholly by the air jet, whereby we may maintain the valve 45 infull open position, so that the possibility of it becoming gummed up orcovered with depositso as to greatly reduce or impede the flow of gasispractically eliminated.

'To vary the amount of air flowing from the tube 58 the valve 51 may beoperated. it will be apparent that the range of variation of theinduction and mixing of the gases may be varied by choosing varioussizes of induction tube and nozzle.

Still another advantage of our construction is that by utilizing theform of burner shown and described a greater efficiency of induction isobtained, and a more efficient mixing action is found to be present.Furthermore, the burner 43, constructed of refractory material, isunharmed by the heat and at the same time conducts sufficient thereof tothe metal sleeve 42 to heat the latter and, by conduction from thelatter, the elbow 41 will become so heated as to enhance the mixingaction between the air and the gas and prevent condensation ofhydrocarbon products in the elbow.

While we have shown and described our improved system and constructionwith more or less particularity, it is to be noted that the constructionshown and described is susceptible of many changes in detail and withoutvarying the flow of inducing medium through said member.

3. In combination, a fuel supply duct, a tube located in said duct andarranged to supply an inducing medium to induce fuel.

through said duct, and means associated With said-tube operable to varythe induction of said fuel Without varying the flow "of inducing mediumthrough said tube.

4. In combination, a fuel supply duct, a tube extending into said duct,a nozzle located in said tube, said nozzle comprising.

an apertured collar having-rearwardly extending arms, and means to varythe position of said nozzle in said tube.

5. In combination, a fuel supply duct, a tube extending into said duct,a nozzle located in said tube, said nozzle comprising an aperturedcollar having rearwardly extending arms, and means to vary the positionof said nozzle in said tube, said means comprising a rod pivotallyattached to said arms.

6'. In combination, a fuel supply duct, an induction tube having aportion extending into said duct, a nozzle slidably mounted in said tubeand comprising an apertured collar having rearwardly extending arms, anda rod extending outwardly of said tube and in engagement with saidnozzle for adjustment of the-latter in said tube.

7. In combination, a fuel supply pipe comprising an elbow havingangularly disposed portions, a valve adapted to control flow of fuelthrough said pipe, said valve having its stem projecting through one ofsaid portions, an air supply pipe extending through another portion ofsaid fuel pipe, and a burner carried by said last named portion of saidfuel pipe.

8. In combination, a fuel supply pipe, a metal sleeve secured to saidpipe, and a refractory burner cemented to the interior of said sleeve,said burner being in com-' munication with said fuel supply pipe, anextremity of said pipe lying adjacent an extremity of'said burner, thebore of the latter at the said extremity being of greater diameter thanthe bore of the said pipe, said bore of said burner being restricted ,toa diameter less than the diameter of said bore ofv said fuel supplypipe.

9. In combination, a fuel supply pipe, a metal sleeve secured to saidpipe, and a refractory burner cemented to the interior of. said sleeve,said burner being in communication with said fuel supply pipe, anextremity of said pipe lyingadjacent an extremity of said burner, thebore of the latter at the said extremity being of greater diameter thanthe bore of the said pipe, said bore of said burner being restricted toa diameter less than the diameter of said bore of said fuel supply pipeand flaring outwardly from said restricted portion toward its otherextremity.

'10. In apparatus of the class described, a fuel supply pipe, an airpipe located within said fuel supply pipe and adapted to supply air formixture with and combustion of said fuel, said air supply being furtherarranged to induce the fiow of gas through said fuel supply pipe, andmeans mounted in said air pipe to vary the inducing effect of said airsupply without varying the amount of air supplied, said means comprisinga nozzle movable in said pipe.

In testimony whereof, we have subscribed our names.

HENRY A. DREFFEIN.

MELVILLE S. FLINN.

Witnesses:

GEO. L.,WILKINSON, HENRY A. PARKS.

